Saturday, January 10, 2009

the cell's lab table

Do you know that cells have "lab tables"? Yes have. These are the ribosomes, the small non-membrane bound organelles composed of proteins and ribosomal RNA (rRNA).

Ribosomes consists of large and small subunits. The small subunit has a site for binding mRNA, a P-site for binding peptidyl tRNA and an A-site for binding aminoacyl tRNA. As you can see these sites are used during protein synthesis. Thus, ribosomes serve as the surface or the lab table for the synthesis of proteins.

By the way, the large and small subunits are manufactured separately in the nucleolus and also released separately to the cytoplasm. They remain as separate entities until the synthesis of proteins starts.

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Welcome

Hi,Welcome to my cell blog. The reason for this blog is written in my first post "why this blog" last October. Writing/talking about cells has developed into a kind of mission for me. I hope you will join me daily or visit every now and then and discover or rediscover more about the wonders of the cell.

This blog is dedicated to my former students and teachers who inspired me through the years. It is especially dedicated to the high school teachers who requested me to write a book. This might serve as a prelude to a book, who knows.

Please leave comments if anything strikes you or you may write me at my email - baby.angtuaco@gmail.comIf you have questions or if you want me to write anything about cells please tell me too. We can work on this together.

I got several blogs one of which is: http://getinspired-photoquotes.blogspot.com/ wherein I share inspirational quotes with photos. I also have other blogs on photography, happiness, and science, as well as about the Philippines.